Two particles of masses $m_{a}$ and $m_{b}$ and same charge are projected in a perpendicular magnetic field. They travel along circular paths of radius $r_{a}$ and $r_{b}$ such that $r_{a} > r_{b}$. Then which is true?

• A
  $m_{a} v_{a} > m_{b} v_{b}$
• B
  $m_{a} > m_{b}$ and $v_{a} > v_{b}$
• C
  $m_{a} = m_{b}$ and $v_{a} > v_{b}$
• D
  $m_{b} v_{b} > m_{a} v_{a}$